Installation
HDD LED
RESET
PWR/SLEEP
PWR
KEY
IrDA
SMBUS
SPK
3.6 Connectors, Headers, and Ports
This motherboard contains IDE, floppy, power connector, front panel, and additional connectors.
3.6.1 Primary IDE Connector (J27, 39-pin block, Black)
This connector supports two primary channel IDE devices as well as the LS120 floppy, Zip, CD-
ROM, and DVD-ROM drives via a ribbon cable. When two IDE devices are installed using the
primary IDE connector, make sure that the second IDE device is set to slave mode as indicated in
the device’s manual.
3.6.2 Secondary IDE Connector (J25, 39-pin block, White)
This connector supports two secondary channel IDE devices as well as the LS120 floppy, Zip,
CD-ROM, and DVD-ROM drives via a ribbon cable. When two IDE devices are installed using
the secondary IDE connector, make sure that the second IDE device is adjusted to slave mode as
indicated in the device’s manual.
Warning:
When you connect a ribbon cable to these ports, you must orient the cable
connector so that the PIN 1 edge of the cable is at the PIN 1 edge of the on-board
connector.
3.6.3 Floppy Drive Connector (J17, 33-pin block)
The FDC sub-system can control three types of floppy drives (1.2, 1.44, and 2.88 MB) and/or
compatible tape drives. The floppy disk interface includes 48mA current support and inputs on
the drive interface.
3.6.4 ATX Power Connector (J26, 20-pin block)
This connector supports one standard ATX power supply. When connecting, make sure the lock
key matches the hook attached on a power supply cable. The power cord should be unplugged
when you connect it.
3.6.5 Front Panel Connectors (J20, 20-pin block)
Front Panel includes connectors for the following six I/O
connectors: Power Switch, Power LED, Reset, IrDA and
HDD LED.
IrDA Connector (Pins 8, 10)
The motherboard offers an IrDA infrared connector that supports third party infrared modules.
The case must reserve space for the IR module if you want to use the IrDA function. This option
supports wireless transmission and reception of infrared data. The module mounts in a small
opening on the system case that supports this feature. The efficient distance is 100cm and the
transfer rate is 115,200 bits/s.
Reset Switch Connector (Pins 1, and 3)
This connector supports the front panel case-mounted reset button. It is advised that the reset
switch be used for rebooting the system in order to extend the life of the system’s power supply.
HDD LED Connector (Pins 5, and 7)
